Perform the indicated operation. Write the answer in the form a + bi.
-$$( - 5 - 9 i ) ( 6 + 6 i )$$
A) $24 - 84 i$
B) $- 30 - 54 i$
C) $- 84 - 84 i$
D) 24

Name: Perform the indicated operation. Write the answer in the form a + bi. -\[( - 5 - 9 i ) ( 6 + 6 i )\] A) $24 - 84 i$ B) $- 30 - 54 i$ C) $- 84 - 84 i$ D) 24
Brand: Quizplus
Rating: 4.9 (45 reviews)

Question

Quizplus · Accepted Answer

To multiply two complex numbers, use the distributive property (FOIL method): $(-5-9i)(6+6i) = -5*6 - 5*6i - 9i*6 - 9i*6i = -30 - 30i - 54i + 54 = 24 - 84i$.

Perform the Indicated Operation (−5−9i)(6+6i)( - 5 - 9 i ) ( 6 + 6 i )(−5−9i)(6+6i)

Perform the Indicated Operation $( - 5 - 9 i ) ( 6 + 6 i )$